70 



The Scottish Naturalist. 



Opbiobolus immersus sp.n. 



In wood of dead stems of Urtica dioica, at Tarbet. Perithecia 

 immersed in the bare wood, ostiole papillate ; asci cylin- 

 drical, 80-90 by 6-7 ; sporidia hyaline, yellowish, slightly 

 curved, filiform, ends rounded, but one rather more 

 slender, 50-75 by 2, faintly pluriguttulate, aseptate. This 

 differs from other species of the genus known to me by its 

 wholly immersed perithecia, and the dimensions of the 

 asci and sporidia. 



Phyllosticta maculiformis Sacc. 

 On leaves of Oaks near Inveraray. Pycnidia on dry spots, in 

 small groups, dark, almost hemispherical, about 100 in 

 diameter, sporules somewhat curved, subcylindrical, 4-5 by 

 1. Conjectured by Saccardo to be the spermogonium of 

 Sphverella maculiformis. 



Phyllosticta Argentina Desm. 



On leaves of Potentilla A?iserina, on the shore of Loch Fyne, 

 at St. Catherine's. Spots spreading as red ill-defined 

 patches over the upper surface of the leaves, which may be 

 wholly attacked ; pycnidia few, minute, and shining ; 

 sporules very numerous, cylindrical, obtuse, 5 by j}, 

 hyaline. 

 Phyllosticta Trollii sp.n. 



On leaves of Trollius europccm in Hell's Glen. Pycnidia hypo- 

 phyllous (on dark brown spots of irregular form, bounded 

 by the leaf-veins or undefined), black, membranous, sub- 

 dermal, depresso-globose, 120-130 in diameter; crowded, 

 but not usually in actual contact ; sporules very abundant, 

 minute, cylindrical, 4 by 1, ends truncate, hyaline. 

 Phoma (?) incommoda sp.n. 



On dead leaves of Myrica Gale, at Dalmally, near Loch Awe. 

 Pycnidia punctiform, minute, dark, prominent, gregarious, 

 incompletely separated from the tissues of the leaf, ostiole 

 subpapillate ; sporules elongate-elliptical, 8-10 by 2-2^, 

 hyaline, supported on basidia about 20 by 2, closely 

 packed along the inner wall of the pycnidium. The 

 structure of the pycnidia is less perfect than is usual in 

 Phoma. 



